Emergency: 119
AMDA-IMIC

C19 Malignant neoplasm of rectosigmoid junction

Billable

Block: Malignant neoplasms of digestive organs (C15-C26)

Includes

  • Malignant neoplasm of colon with rectum
  • Malignant neoplasm of rectosigmoid (colon)

Excludes 1 (cannot be coded together)

  • malignant carcinoid tumors of the colon (C7A.02-)
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This category is a complete, billable diagnosis code.

No additional specificity is required — submit C19 directly on claims and documentation without a subcode extension.

Last reviewed: September 2026